Home / Standards / SY/T 5918-2011 SY/T 5918-2011 Abolished 埋地钢质管道外防腐层修复技术规范 Standard Type SY ICS N/A CCS N/A Status Abolished Issue Date 2011-07-28 Implementation 2011-11-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局